Mean () = 100
std. dev ()=10
By 68-95-99.7% Rule
about 68% of the data are within 90 and 110.>> True. Since area around 1 std dev around mean have around 68%
almost all the data are within 70 and 130. >> True, Since area around 3 std dev around mean have around 99.7%
about 95% of the data are within 80 and 120.True, Since area around 2 std dev around mean have around 95%
about half the data exceed 60. False because half og the data exceed mean value so 100
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